After one to two days of jury selection in Philadelphia, the trial will unfold in federal court in Allentown, just blocks away from City Hall.

Here are the key players in the trial:

Judge Juan R. Sanchez

CONTRIBUTED PHOTO / U.S. COURTS

U.S. District Judge Juan R. Sanchez

U.S. District Judge Juan R. Sanchez (CONTRIBUTED PHOTO / U.S. COURTS)

Sanchez will preside over Mayor Ed Pawlowski’s trial and later a separate but related trial for Reading Mayor Vaughn Spencer. Sanchez was appointed to the bench in 2004 and previously served as a common pleas judge in Chester County. Sanchez is known for being tough on defendants in corruption cases.

Jack McMahon

MONICA CABRERA / MORNING CALL FILE PHOTO

Jack McMahon

Jack McMahon (MONICA CABRERA / MORNING CALL FILE PHOTO)

McMahon is a Philadelphia criminal defense attorney in private practice since 1990. McMahon, known for his colorful, passionate performances in court, will represent Pawlowski.

William Winning

Cozen O'Connor / CONTRIBUTED PHOTO

Attorney William Winning represents Allentown lawyer Scott Allinson, who is charged with conspiracy and bribery as a codefendant of Mayor Ed Pawlowski.

Anthony Wzorek, Michelle Morgan

Wzorek, a career prosecutor, will present the government’s case against Pawlowski and Allinson. Wzorek previously prosecuted high-profile cases including a corruption probe into the Philadelphia Traffic Court and a case against six Philadelphia narcotics officers accused of stealing from drug suspects.

Morgan will present the government’s case alongside Wzorek. Morgan is best known for her work prosecuting sex traffickers. She also prosecutes public corruption cases.

Scott Curtis

Hermann, Marc, A. / THE MORNING CALL

Scott Curtis, FBI agent

Scott Curtis, FBI agent (Hermann, Marc, A. / THE MORNING CALL)

Curtis is the FBI agent who led the investigation of pay-to-play politics in Allentown City Hall and Reading that resulted in charges against 16 people including Pawlowski. As an FBI agent in New York, newspapers dubbed Curtis the “scourge of the Colombo crime family” for his role in policing organized crime.

Ed Pawlowski

Matt Rourke / AP

Ed Pawlowski

Ed Pawlowski (Matt Rourke / AP)

Mayor of Allentown since 2006, Pawlowski faces 54 criminal counts including conspiracy, fraud and bribery. He has pleaded not guilty.

Scott Allinson

CONTRIBUTED PHOTO / NORRIS MCLAUGHLIN & MARCUS

Scott Allinson

Scott Allinson (CONTRIBUTED PHOTO / NORRIS MCLAUGHLIN & MARCUS)

An attorney with Allentown firm Norris McLaughlin & Marcus, Allinson is charged with bribery and conspiracy. He has pleaded not guilty.

Here are the possible witnesses who could be called to testify:

Sam Ruchlewicz

CONTRIBUTED PHOTO

Sam Ruchlewicz

Sam Ruchlewicz (CONTRIBUTED PHOTO)

An employee of Mike Fleck’s consulting company, H Street Strategies, Ruchlewicz secretly recorded his boss and Pawlowski for the FBI for more than a year. Ruchlewicz has not been charged or accused of wrongdoing.

Celeste Dee

COURTESY OF CELESTE DEE

Celeste Dee

Celeste Dee (COURTESY OF CELESTE DEE)

Dee, a political consultant, worked for H Street Strategies, running campaigns for clients of Mike Fleck, including Pawlowski and Koval. Dee has not been charged or accused of wrongdoing. She shared a small office with several key players in the case.

Craig Messinger

MONICA CABRERA / MORNING CALL FILE PHOTO

Craig Messinger

Craig Messinger (MONICA CABRERA / MORNING CALL FILE PHOTO)

Messinger is Allentown’s director of Public Works. Former managing director Fran Dougherty admitted in his guilty plea that he gave Messinger a thumb drive with contract documents preferential to a company whose principals donated to Pawlowski. Messinger did not use the documents, and Dougherty threatened to fire him, according to court documents. Messinger has not been charged or accused of wrongdoing.

Matt Leibert

MONICA CABRERA / MORNING CALL FILE PHOTO

Matthew Leibert

Matthew Leibert (MONICA CABRERA / MORNING CALL FILE PHOTO)

Leibert is Allentown’s director of IT. He was the city’s point person on a contract with cyber security firm Ciiber, a contract at the center of a conspiracy that Pawlowski was allegedly involved in. Ciiber is financially backed by developer Jack Rosen, who donated to Pawlowski’s U.S. Senate campaign along with several members of his family. Leibert and Rosen have not been charged or accused of wrongdoing.

Jonathan Saidel

CONTRIBUTED PHOTO / SARAH J. GLOVER

Jonathan Saidel

Jonathan Saidel (CONTRIBUTED PHOTO / SARAH J. GLOVER)

Saidel is a Philadelphia attorney and former city controller. According to court documents, Saidel was representing law firm Stevens & Lee in 2015 when Pawlowski complained that although he had given legal work to the firm, it had reciprocated with an “insufficient” amount of political contributions. Saidel has not been charged or accused of wrongdoing.

Rick Holtzman

Holtzman is Allentown’s superintendent of parks. He was involved in the bidding process for the city’s contract for Cedar Beach Pool, which is at the center of one of the conspiracy schemes Pawlowski is allegedly involved in. Holtzman has not been charged or accused of wrongdoing.

Marc Feller

Feller is a partner with the Philadelphia law firm Dilworth Paxson. According to court documents, Pawlowski solicited a $20,000 donation from Feller and his firm with the intention of rewarding the group with city legal contracts. Feller has not been charged or accused of wrongdoing.

Debra Bowman

Bowman is Allentown’s deputy director of finance. She worked under former finance director Strathearn when the city’s delinquent tax collection contract was bid. Strathearn removed Bowman from a committee that was scoring bids after she and other committee members selected a vendor who was not a donor to Pawlowski’s campaign, according to court documents. Bowman has not been charged or accused of wrongdoing.

Here are the people have pleaded guilty:

Mike Fleck

MONICA CABRERA / MORNING CALL FILE PHOTO

Mike Fleck

Mike Fleck (MONICA CABRERA / MORNING CALL FILE PHOTO)

Pawlowski’s former campaign adviser and close friend pleaded guilty in 2016 to conspiracy to commit extortion and bribery offenses and tax evasion. He secretly recorded Pawlowski for the FBI. Fleck abruptly shuttered his consulting businesses and moved from his Allentown home days after a July 2015 FBI raid of Allentown City Hall.

James Hickey

MORNING CALL FILE PHOTO

James Hickey

James Hickey (MORNING CALL FILE PHOTO)

A business consultant whose clients included businesses seeking contracts in Allentown and Reading, Hickey was indicted with Pawlowski and Allinson in July. He pleaded guilty last month to two counts of honest services wire fraud.

Francis Dougherty

CHRIS KNIGHT / SPECIAL TO THE MORNING CALL

Francis Dougherty

Francis Dougherty (CHRIS KNIGHT / SPECIAL TO THE MORNING CALL)

Dougherty served as Allentown’s managing director until resigning in April 2016. He pleaded guilty to conspiracy to commit mail or wire fraud in 2017 for his role in steering a city streetlight contract to a campaign donor of Pawlowski.

Gary Strathearn

MORNING CALL FILE PHOTO

Gary Strathearn

Gary Strathearn (MORNING CALL FILE PHOTO)

Allentown’s former finance director pleaded guilty to conspiracy to commit mail and wire fraud in 2016. He admitted his role in a scheme to rescore a bid for the city’s tax collection contract in favor of a campaign donor of Pawlowski.

Mary Ellen Koval

MORNING CALL FILE PHOTO

Mary Ellen Koval

Mary Ellen Koval (MORNING CALL FILE PHOTO)

Koval, Allentown’s controller from 2012 to 2016, pleaded guilty to conspiracy to commit honest services fraud for her role in steering contracts with the city and the Allentown Parking Authority to campaign donors of herself and Pawlowski.

Matthew McTish

DOUGLAS KILPATRICK / SPECIAL TO THE MORNING CALL

Matthew McTish

Matthew McTish (DOUGLAS KILPATRICK / SPECIAL TO THE MORNING CALL)

McTish, former president of McTish Kunkel Associates, pleaded guilty in 2016 to one count of conspiracy to commit bribery offenses. McTish admitted to making thousands of dollars in campaign donations to get municipal contracts in Allentown and Reading.

Dale Wiles

File Photo/ THE MORNING CALL

Dale Wiles

Dale Wiles (File Photo/ THE MORNING CALL)

Allentown’s former assistant solicitor pleaded guilty in 2015 to conspiracy to commit mail and wire fraud, admitting to helping steer the city’s tax collection contract to a campaign donor of Pawlowski’s. Wiles admitted to creating a fake score sheet for the contract as well as hiding documents from a grand jury.

Ramzi Haddad

MORNING CALL FILE PHOTO

Ramzi Haddad

Ramzi Haddad (MORNING CALL FILE PHOTO)

Haddad, a local developer, pleaded guilty in 2015 to conspiracy to commit bribery. He admitted donating to Pawlowski’s campaigns in exchange for preferential treatment from the city.